Numerical and Experimental Research on Convergence Angle of Wet Sprayer Nozzle

Su, Chang; Cheng, Yunhai

doi:10.28991/cej-03091132

Cited by 9 publications

(3 citation statements)

References 11 publications

(11 reference statements)

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“…They concluded that the results predicted by the CFD software generally are consistent with the literature data for different nozzle pressure ratios (NPRs). Su and Cheng [10] conducted numerical and experimental research on the convergence angle of the wet sprayer nozzle. They investigated a convergent nozzle with a cone-half angle between 3° and 7° used in a shotcrete operation for the construction of both ground projects and underground projects, such as tunnels, subways, slopes, roadways, etc.…”

Section: Introductionmentioning

confidence: 99%

Yakınsak-Konik Nozulların Giriş ve Çıkış Çaplarının İtme Kuvveti ve Hacimsel Debi Üzerindeki Etkisinin Teorik, Nümerik ve Deneysel İncelemesi

HIZARCI,

KIRAL

2023

DEUFMD

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It is possible to see convergent conical type nozzles everywhere, from daily life to rocket science. They are utilized as the main part of the propulsion system in many applications such as air blow guns for spraying, steam turbines for compression, rockets for thrust generation, satellites for altitude control and so on. Although the convergent conical nozzle is a well-known nozzle, there are few studies on the effects of geometric changes by comparing more than one approach together. Therefore, this study investigates thrust and volumetric flow rate for different inlet and exit diameters of the convergent conical nozzles theoretically, numerically and experimentally. In this study, the quasi-one-dimensional Euler equations are defined for the theoretical investigation of convergent conical nozzles. However, in this approach, many important features such as viscous losses are neglected. In fact, nozzle flows have highly complex features including shock waves, turbulence, and boundary layers due to compressible effects. Thus, Computational Fluid Dynamic (CFD) simulations are performed with ANSYS Fluent for numerical investigation of the nozzle in this study. CFD simulations provide a better understanding and illustration of convergent conical type nozzle flows. For a third approach, the experimental investigation is conducted for thrust and volumetric flow rate measurements. Theoretical and numerical results are compared with the experimental results and similarity ratios are defined to find the closest to the experimental results.

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Section: Introductionmentioning

confidence: 99%

Yakınsak-Konik Nozulların Giriş ve Çıkış Çaplarının İtme Kuvveti ve Hacimsel Debi Üzerindeki Etkisinin Teorik, Nümerik ve Deneysel İncelemesi

HIZARCI,

KIRAL

2023

DEUFMD

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“…Jalali et al [14] observed that higher heat transfer coefficient was achieved by using 2.5 wt % Al2O3 nano-fluids compared to 1.0 wt % Al2O3 nanofluids. There is also research on the production of hybrid nanoparticles and its effect on increasing heat transfer [15][16][17][18]. Shokouhmand et al [19] investigated convective heat transfer and laminar flow by using lattice boltzmann method (LBM) in two channel configurations in a canal full of an inserting porous.…”

Section: Introductionmentioning

confidence: 99%

Effect of Porous Medium Positioning on Heat Transfer of Micro-channel with Jet

Alibeigi

Farahani

2020

IJE

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In this paper, the influence of the locating additive or placing porous-medium film on the heat transfer of a micro-channel by injecting fluid from its lower wall is investigated. The boundary condition slipwalls for the lower and higher walls of the micro-channel and orderly, as insulation and constant temperature is considered, respectively results show that the heat transfer increased with increasing Darcy number and the porous-medium film thickness. The consequences disclosed that the place of the porous-film has a substantial effect on heat transfer. The percentage changes observed for cases such the porous layer in the middle of the micro-channel, near the two upper and lower walls, near the upper wall, near the upper wall and in the form of a rib, along the length of the micro-channel with L /3 and L/5 is-14%, 2.25%, 5.46%, 55.53%, 70.5% and 86.27% for nusselt number compared to the porous layer-less state.

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“…The study of non-Newtonian fluid flow has been appealing many interests, due to its numerous industrial and engineering applications including polymer technology, condensed matter physics, astrophysics, geophysics, environmental, biophysics and molten plastics, etc. Furthermore, according to literature, the subject of the MHD fluid flows have been considered in many research works using different methods [1][2][3][4][5], and fluid flow in the nozzle has been investigated with different methods as well [6,7]. Makinde [8] investigated the effect of arbitrary magnetic Reynolds number on a steady flow of an incompressible conducting viscous liquid in divergent channels under the influence of an externally applied homogeneous magnetic field.…”

Section: Introductionmentioning

confidence: 99%

Effect of Non-uniform Magnetic Field on Non-newtonian Fluid Separation in a Diffuser

Moghimi

Abbasi

Jamei

et al. 2020

IJE

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The purpose of the present study is to investigate the boundary layer separation point in a magnetohydrodynamics diffuser. As an innovation, the Re value on the separation point is determined for the non-Newtonian fluid flow under the influence of the non-uniform magnetic field due to an electrical solenoid, in an empirical case. The governing equations including continuity and momentum are solved by applying the semi-analytical collocation method (C.M.). The analysis revealed that for specific values of De from 0.4 to 1.6, α from 20 o to 2.5 o and Ha from zero to 8, the Re value on the separation point is increased from 52.94 to 1862.78; thus, the boundary layer separation postponed. Furthermore, the impact of the magnetic field intensity on the separation point is analyzed from the physical point of view. It is observed the wall shear stress increases by increasing magnetic field intensity that leads to delaying the boundary layer separation.

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Numerical and Experimental Research on Convergence Angle of Wet Sprayer Nozzle

Cited by 9 publications

References 11 publications

Yakınsak-Konik Nozulların Giriş ve Çıkış Çaplarının İtme Kuvveti ve Hacimsel Debi Üzerindeki Etkisinin Teorik, Nümerik ve Deneysel İncelemesi

Yakınsak-Konik Nozulların Giriş ve Çıkış Çaplarının İtme Kuvveti ve Hacimsel Debi Üzerindeki Etkisinin Teorik, Nümerik ve Deneysel İncelemesi

Effect of Porous Medium Positioning on Heat Transfer of Micro-channel with Jet

Effect of Non-uniform Magnetic Field on Non-newtonian Fluid Separation in a Diffuser

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